Evidence map›Paper›PMID 29255919›Full record

ArticleNeuroradiology2018

Metabolic topography of autoimmune non-paraneoplastic encephalitis.

Madhavi Tripathi, Manjari Tripathi, Shambo Guha Roy, Girish Kumar Parida, Kavish Ihtisham, Deepa Dash, Nishikant Damle, Shamim Ahmed Shamim, Chandrasekhar Bal

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Article in Neuroradiology, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 32 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
32citing papers in PubMed, 2 pooled it
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

32 citing papers in PubMed, 2 syntheses or guidelines pooled it.

  1. [18F]FDG brain PET and clinical symptoms in different autoantibodies of autoimmune encephalitis: a systematic review.Neurological sciences : official journal of the Italian Neurological Society and of the Italian Society of Clinical Neurophysiology · 2022
    Pooled it
  2. BrainEuropean journal of nuclear medicine and molecular imaging · 2021
    Pooled it
  3. Frontiers in neurology · 2026
    Article
  4. Comparison ofEuropean journal of nuclear medicine and molecular imaging · 2025
    Article
  5. Article
  6. Article
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  8. Typical metabolic pattern ofBMC neuroscience · 2023
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  9. Article
  10. Review
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  13. Observational
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  15. Decrease in the cortex/striatum metabolic ratio on [European journal of nuclear medicine and molecular imaging · 2022
    Article
  16. Article
  17. Article
  18. [Neurology · 2021
    Article
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

9 authors.

Madhavi TripathiDepartment of Nuclear Medicine, All India Institute of Medical Sciences, New Delhi, 110029, India. madhavi.dave.97@gmail.com.
Manjari TripathiDepartment of Neurology, Cardiothoracic and Neurosciences Centre, All India Institute of Medical Sciences, New Delhi, India.
Shambo Guha RoyDepartment of Nuclear Medicine, All India Institute of Medical Sciences, New Delhi, 110029, India.
Girish Kumar ParidaDepartment of Nuclear Medicine, All India Institute of Medical Sciences, New Delhi, 110029, India.
Kavish IhtishamDepartment of Neurology, Cardiothoracic and Neurosciences Centre, All India Institute of Medical Sciences, New Delhi, India.
Deepa DashDepartment of Neurology, Cardiothoracic and Neurosciences Centre, All India Institute of Medical Sciences, New Delhi, India.
Nishikant DamleDepartment of Nuclear Medicine, All India Institute of Medical Sciences, New Delhi, 110029, India.
Shamim Ahmed ShamimDepartment of Nuclear Medicine, All India Institute of Medical Sciences, New Delhi, 110029, India.
Chandrasekhar BalDepartment of Nuclear Medicine, All India Institute of Medical Sciences, New Delhi, 110029, India.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeF-18 fluorodeoxyglucose (FDG) positron emission tomography (PET) is emerging to be a useful tool in supporting the diagnosis of AIE. In this study, we describe the metabolic patterns on F-18 FDG PET imaging in AIE.

methodsTwenty-four antibody-positive patients (anti-NMDA-15, anti-VGKC/LGI1-6, and anti-GAD-3), 14 females and 10 males, with an age range of 2-83 years were included in this study. Each PET study was evaluated visually for the presence of hypometabolism or hypermetabolism and semiquantitatively using Cortex ID (GE) and Scenium (Siemens) by measuring regional Z-scores. These patterns were correlated with corresponding antibody positivity once available.

resultsVisually, a pattern of hypometabolism, hypermetabolism, or both in various spatial distributions was appreciated in all 24 patients. On quantitative analysis using scenium parietal and occipital lobes showed significant hypometabolism with median Z-score of -3.8 (R) and -3.7 (L) and -2.2 (R) and -2.5 (L) respectively. Two-thirds (16/24) showed significant hypermetabolism involving the basal ganglia with median Z-score of 2.4 (R) and 3.0 (L). Similarly on Cortex ID, the median Z-score for hypometabolism in parietal and occipital lobes was -2.2 (R) and -2.4 (L) and -2.6 (R) and -2.4 (L) respectively, while subcortical regions were not evaluated. MRI showed signal alterations in only 11 of these patients.

conclusionThere is heterogeneity in metabolic topography of AIE which is characterized by hypometabolism most commonly involving the parietal and occipital cortices and hypermetabolism most commonly involving the basal ganglia. Scenium analysis using regional Z-scores can complement visual evaluation for demonstration of these metabolic patterns on FDG PET.

Indexed as

Positron-Emission TomographyAdolescentAdultAgedAged, 80 and overChildChild, PreschoolEncephalitisFemaleFluorodeoxyglucose F18Hashimoto DiseaseHumansInfantMaleMiddle AgedRadiopharmaceuticalsFluorodeoxyglucose F18RadiopharmaceuticalsAIEF-18 FDGGADLGI1NMDARPET

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.